Link Relay B, Link Register W; Special Relay For Link Sb, Special Register For Link Sw - Mitsubishi Electric MELDAS C6 Programming Manual
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- Instruction manual (507 pages) ,
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5.3.4 Link Relay B, Link Register W
(1) Link relay B is a bit type device used for the data link in each link function. An unused part can be
used as first memory, etc., however, the step No. will be increased.
(2) Link register W is a word type device used for the data link in each link function. An unused part
can be used as first memory, etc., however, the step No. will be increased.
Link relay B, Link register W
(a) These are cleared when the power is turned OFF.
(b) There is no limit to the No. that can be used in the program.
(c) The register No. is expressed with a hexadecimal.
5.3.5 Special Relay for Link SB, Special Register for Link SW
Special relay for link SB
(a) Special relay for link SB is a relay used for the exchange of data between each network card
and PLC program.
(b) SB is controlled to DN or OFF by various causes that happen during the data link. Thus,
monitoring this relay helps you to find an error state of the data link.
Special register for link SW
(a) Special register for link SW is a relay used for the exchange between each network card and
PLC program.
(b) Information during data link is stored in this register. Thus, monitoring this register helps you to
find an error occurrence point and the causes.
5. Explanation of Devices
5.3 Detailed Explanation of Devices
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